ARCHIVED REPORTS_SITE CHARACTERIZATION REPORT 1999

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TABLE A-1. AREA 10,MULTIMEDIA EXPOSURE PATHWAY EVALUATION, CONSTRUCTION WORKER SCENARIO NORTH SHORE PROPERTIES CITY OF STOCKTON HOUSING AND REDEVELOPMENT AGENCY STOCKTON,CALIFORNIA Acronym Units Value Toluene Xylenes As HR All Chemicals of Concern Exposure Parameters: Soil Concentration Cs mg/kg Chem-Spa -- - 1.31E+01 3.60E-01 -- ' Particulate Concentration' Ca mg/m' Chem-Spa - -- 6.56E-07 1.80E-08 Groundwater Concentration C. mg/L Chan-Spa 8.30E-04 6.00E-04 Exposure Point Air Concentration from Groundwater- C_ mg/m' Chem-Spa 9.49E-08 2.93E-08 Ingestion Rate-Adult Ad rNGR, mg/day 480 Ingestion Conversion Factor CF kg/mg I.00E-06 -- -- - .- 1 Inhalation Rate-Adult Ad IR m'/day 20 - - - - Skin Surface Area-Adult SAa <m- 3600 Soil Adhaarce Factor-Adult AFa mg/cm 0.2 Dermal Absorption Factor ABS Unitless Chem-Spa 1.00E-02 1.00E-02 3.00E-02 I.O0E-02 -- Soil Dermal Conversion Factor CFs kg/mg LOOE-06 - - - -- -- ' Groundwater Dermal Conversion Factor CFgw Ucm' 1.00E-03 - Dermal Permeability Coefficient from Water K. en✓hr Chem-Spec 4.50E-02 8.00E-02 Dermal Exposure Duration to Groundwater-Adult GW AdEDder hr 5.00&01 Exposure Frequency-Adult Ad EF days/year 250 - -- Exposure Duration-Adult Ad ED years I Body Weight-Adult Ad BW kg 70 ' Averaging Time-Noncarcinogenic-Adult Ad At,,, days 365 Averaging Time-Carcinogenic At_ days 25550 Chronic Daily Intakes: GW Inhalation-Noncarcinogenic-Adult GWAd IHL CDI,,. g(kg-day Chem-Spa 1.86E-08 5.74E-09 GW Ingestion-Noncarcinogenic-Adult GWAd MG CDI,,, mg/kg-day Chem-Spa -- -- - - _ GW Dermal-Noncarcinogenic-Adult GWAd DER CDI, mg/kg-day Chem-Spa 6.58E-07 8.45E-07 - -- - Soil Inhalation-Nonca cinogenic-Adult SoilAdINH CDI,,, mg/kgday Chem-Spa 1.28E-07 3.52E-09 Soil Ingestion-Noncarcinogenic-Adult SoilAdING CDI,,, mg/kgday Chem-Spa 6.16E-05 L69E-06 Soil Dermal-Noncarcinogenic-Adult SoilAdDER CDI, mgfkgd.y Chem-Spa - -- 2.77E-06 2.54E-08 - GWlnhalation-Carcinogenic-Adult GWAd IHL CDIc mgfkgday Chaa n-Sp GW Ingestion-Carcinogenic-Adult GWAd ING CDIc nig/kg-day Chem-Spa GW Dermal-Carcinogenic-Adult GWAd DER CDIc, mg/kg-day Chem-Spa Soil Inhalation-Carcinogenic-Adult SoilAdINH CDI, mgfkgd.y Chem-Spec -- - 1.83E-09 - - Soil Ingestion-Carcinogenic-Adult SpIIAdING CDI, mg/kg-day Chan-Spa - - 8.80E-07 - -- Soil Dermal-Carcinogenic-Adult SoilAdDER CDI, mg/kgday Chem-Spa - - 3.96E-08 - - Toxicity Criteria: Verified Reference Dosc-IHL RID-Inh mgtkgday Chem-Spa 1.1 OE-0I 2.00E-01 8.60E-05 Verified Reference Dose-MG RID-Ing mglkgday Chem-Spa 2.00E-01 2.00E+00 3.00E-04 3.00E-04 - Verified Reference Dose-DER' RID-Der mg/kg-day Chem-Spa 2.00E-03 2.00E-02 9.00E-06 3.00E-06 -- - Canca Slope Factor-IHL CSF-Inh (mWkgdav)' Chem-Spa NC NC 1.50E+01 NC - Cancer Slope Factor-MG CSF-Ing (mg/kg-day)-' Chem-Spa NC NC 1.50E+0I NC -_ Cancer Slope Factor-DER' CSF-Der (mx/kgday)` Chem-Spec NC NC 5.00E+02 NC Noncarcinogmic Hazards: GW Hazard Quotients-Adult-IHL GW Ad HQ-1h] unitless Chan-Spa 1.69E-07 2.87E-09 - -- 1.98E-07 GW Hazard Quotients-Adult-Ing GW Ad HQ-Ing unities Chem-Spa - -- -- - -- ' GW Hazard Quotients-Adult-Der GW Ad HQ-Der unitIm Chem-Spec 3.29E-04 4.23E-05 = -- 3.71E-04 GWHaaard Index-Adult GW Ad HI pnitless 3.71E-04 Soil Hazard Quotient-Adult-IHL Soil Ad HQ-Ihl unitless Chem-Spa 4.10E-05 4.10E-05 Soil Hazard Quotient-Adult-Ing Soil Ad HQ-Ing unidess Chem-Spa - - 2.05E-01 5.64E-03 2.11E-01 Soil Hazard Quotient-Adult-Der Soil Ad HQ-Da unitiess Chem-Spa - - 3.08E-01 8.45E-03 3.17E-01 Soil Huard Index-Adult Soil Ad HI unitlev - 5.28E-01 Carcinogenic Risks: GW Risk-IHL GW RISK-IHL unitless Chem-Spa NC NC NC 0.00E+00 GW Risk-ING GW RISK-MG unid- Chem-Spa NC NC -- NC 0.00E+00 GW Risk-DER GW RISK-DER unitless Chem-Spec NC NC - NC 0.00E+00 GW Taal Risk GW T0421 RISK unitless 0.00E+00 Soil Risk-IHL Soil RISK-IHL unitiess Chem-Spa NC NC 2.75E-08 NC 2.75E-08 Soil Risk-ING Soil RISK-MG uniticss Chem-Spa NC NC 1.32E-05 NC 1.32E-05 Soil Risk-DER Soil RISK-DER unitless Chan-Spa NC NC 1.98E-05 NC 1.98E-05 Soil Tocol Risk Soil Taal RISK anilless 3.30E-05 Dust concentrations conservatively estimated assuming that the ambient air particulate levels are equal to the National Ambient Air Standard for the annual average respirable portion(PMIO)of 50 ug/m3. 'Outdoor air concentration calculated by multiplving volatilization factor by chemical concentration in groundwater. ' Dermal refamce time and cancer Wmcy factor calculated by dividing respective oral CSF by dermal absorption factor and multiplying RID by dermal absorption factor(ABS)(U.S.EPA.199 11 NA Na an applicable exposure pathway. NC Not considered to be carcinogenic Chan-Spec Chemical-specific parameter value. kg Kilograms. m'/day Cubic meters per derv. mg/m' Milligrams per cubic meta. mg/kg-day Milligrams per kilogram-day. (mg/kgdav)" Reciprocal milligrams pa kilogramday. ' kg/mg Kilograms per milligrams mR/Cnl milligrams per square centimeter em square centimeter soxu 99-,+is P.s.1.11 U11.